Respiratory face mask

ABSTRACT

A respiratory face mask includes a face mask and a breathing tube. The face mask includes a transparent mask. An outer edge of the transparent mask is double-layered and forms an exhaust passage. The exhaust passage is provided with an airflow inlet. The transparent mask is provided with a soft plastic cover that seals the exhaust passage. An inner bottom side of the soft plastic cover is provided with a breathing chamber. The periphery of the breathing chamber is sealingly pressed against an inner wall of the transparent mask by a fixing frame. The fixing frame is provided with an air-guiding groove that is in sealed communication with the airflow inlet, and an air-exit aperture that is in communication with the air-guiding groove. The air-exit aperture is provided with an air-exit one-way valve plate which is mounted on the fixing frame.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Chinese Patent Application No. 201710251471.3 filed on Apr. 15, 2017. All the above are hereby incorporated by reference.

FIELD OF THE TECHNOLOGY

The present application relates to diving products, and more particularly to a respiratory face mask which can avoid breathing in exhaled waste gas during inhalation.

BACKGROUND

In order to improve the viewing scene in water, a diver would normally use a pair of goggles and a snorkel during snorkeling. The pair of goggles is mounted in front of the face of the diver's head. The diver then holds a mouthpiece at one end of the snorkel in the mouth, and allows the other end of the snorkel to extend upwards. The diver can view the scene under water while breathing in and out with the snorkel. The goggles and the snorkel are independent in structure. The way of holding a snorkel with the mouth is unnatural to beginners. Furthermore, after snorkeling for a long time, the facial muscles will become numb. This will affect the diver's fun of experiencing. Another face mask structure is the integrated type structure, which does not require a mouthpiece on a snorkel. The diver can breathe directly through a chamber, and air exchange can be carried out at the same time through a breathing tube. However, using such a mask, the diver would often breathe in his/her own exhaled waste gas, making the diver stuffy and uncomfortable. Moreover, the channels of this kind of mask structure are formed of a middle inhale channel and exhale channels at two sides of the mask. However, the inhale and exhale channels of this kind of mask are too small such that breathing in and out cannot be very smooth. Furthermore, since the diver's head is located under the water, it is not easy to observe the condition at the back. A diver cannot readily observe the position of the teammates behind, and hence it is difficult to be aware of his/her own position. If the water temperature is too low during diving, it will consume a lot of the body's energy. Determining of water temperature can be used to set the diving time. However, at this time only skin temperature is available and accurate data cannot be obtained.

SUMMARY

In order to overcome the drawbacks of the prior art, it is an object of the present application to provide a respiratory face mask which can avoid breathing in exhaled waste gas during inhalation.

The respiratory face mask of the present application is achieved by the following technical measures. A respiratory face mask includes a face mask; a breathing tube connected with the face mask; and an upper cover and a gasket mounted on an upper portion of the breathing tube to separate a passage of the breathing tube and the face mask from external environment, wherein the face mask includes a transparent mask, an outer edge of the transparent mask being double-layered and forming an exhaust passage, an upper portion of the transparent mask being provided with a connecting tube which is in communication with the exhaust passage and is connected with the breathing tube, the exhaust passage being provided with at least one airflow inlet facing inwardly towards a user's mouth and nose, the outer edge of the transparent mask being provided with a soft plastic cover that seals the exhaust passage, an inner bottom side of the soft plastic cover being provided with a breathing chamber having a seal provided along an edge thereof that fits over the user's mouth and nose, a periphery of the breathing chamber being sealingly pressed against an inner wall of the transparent mask by a fixing frame, the fixing frame being provided with an air-guiding groove that is in sealed communication with the airflow inlet, the fixing frame being provided with an air-exit aperture that is in communication with the air-guiding groove, and the air-exit aperture being provided with an air-exit one-way valve plate which is mounted on the fixing frame.

In a preferred embodiment, the transparent mask is provided with a display screen with a main board located in front of the user's forehead, and the face mask or the breathing tube is provided with at least one environmental sensor.

In a preferred embodiment, the environmental sensor includes a temperature sensor, a camera, a global positioning system module, or a combination thereof provided on an outer surface of the face mask or the breathing tube.

In a preferred embodiment, the breathing tube is connected to an upper portion of the face mask, and the transparent mask is recessed inwardly on an outer surface thereof at a region in front of the user's eyes to form an anti-scratch portion.

In a preferred embodiment, an outer top portion of the face mask is provided with an outwardly extending bearing platform, the bearing platform being provided with a trough, two sides of the trough being provided with two aligned through-holes respectively, and an outer wall at one of the two sides of the trough being provided with a slot, the face mask further including a connecting element, the connecting element including a connecting base which is releasably slotted into the slot, and a fixing post connected to one end of the connecting base, wherein the fixing post is inserted into the two through-holes, and is rotatable so that the connecting base is secured in the slot, and is further rotatable so that the connecting base is released from the slot to thereby allow pulling out of the fixing post from one side of the slot.

In a preferred embodiment, connecting ends of the fixing post and the connecting base are mounted thereon with a spring and a sliding ring, wherein the sliding ring is sleeved onto the fixing post and restrictedly slidable therealong, and the spring is compressed between the sliding ring and the connecting base, the sliding ring being larger than the through-holes, the connecting base being provided with at least one radially extending protrusion, and the slot being provided with a notch through which the protrusion passes, when the connecting element passes through the two through-holes, the protrusion of the connecting base enters the slot through the notch, and rotation of the connecting base causes the protrusion to press against an inner wall of the slot under returning force of the spring so that the connecting base is held in the slot, and further rotation of the connecting base to a position where the protrusion is aligned with the notch, the connecting base is released from the slot under the returning force of the spring so that the fixing post is allowed to be pulled out from the one side of the slot.

In a preferred embodiment, the soft plastic cover divides the transparent mask into an inhale passage and the exhaust passage, and the connecting tube is provided with separated inner and outer openings, the inner opening being in sealed communication with the inhale passage between the soft plastic cover and the transparent mask, and the outer opening being in sealed communication with the exhaust passage.

In a preferred embodiment, an outer side of the soft plastic cover is provided with a fixing ring that seals and presses the soft plastic cover against the transparent mask.

In a preferred embodiment, a lower portion of the transparent mask is provided with water drainage holes, and the water drainage holes are provided with a water drainage one-way valve plate mounted on the transparent mask, the lower portion of the transparent mask being provided with a fixing block that covers the water drainage holes, and the fixing block is opaque.

In a preferred embodiment, the soft plastic cover is provided with a sleeve snugly sleeved around the connecting tube of the transparent mask, and the fixing ring is provided with an outer sleeve snugly sleeved around the sleeve of the soft plastic cover, the outer sleeve being provided with a recessed neck around which a rubber sealing ring is mounted.

In the respiratory face mask of the present application, the fixing frame is provided with an air-guiding groove that is in sealed communication with the airflow inlets, an air-exit aperture that is in communication with the air-guiding groove, and the air-exit aperture is provided with an air-exit one-way valve plate which is mounted on the fixing frame. During exhalation, exhaled gas opens up the air-exit one-way valve plate, passes through the air-exit aperture, enters the air-guiding groove, then passes through the airflow inlets and the exhaust passage, and finally exits the breathing tube through the connecting tube. During inhalation, the air-exit one-way valve plate is closed, thereby preventing breathing in exhaled waste gas during inhalation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of an embodiment of the respiratory face mask.

FIG. 2 is an exploded view of an embodiment of a face mask of the respiratory face mask.

FIG. 3 is a perspective view of an embodiment of a transparent mask of the respiratory face mask.

FIG. 4 is a perspective view of an embodiment of the respiratory face mask.

FIG. 5 is an exploded view of an embodiment of a fixing ring of the respiratory face mask.

FIG. 6 is another exploded view of the fixing ring of the respiratory face mask.

DETAILED DESCRIPTION

The respiratory face mask of the present application will now be described in further detail with reference to the accompanying drawings.

A respiratory face mask, as shown in FIGS. 1-4, may include a face mask and a breathing tube 4 connected to an upper portion of the face mask. An upper cover 1 and a sealing gasket 2 may be mounted at an upper portion of the breathing tube 4 to separate a passage of the breathing tube 4 and the face mask from the external environment. The face mask may include a transparent mask 13. An outer edge of the transparent mask 13 may be double-layered and form an exhaust passage 13 a. An upper portion of the transparent mask 13 may be provided with a connecting tube 13 b which may be in communication with the exhaust passage 13 a and may be connected with the breathing tube 4. The exhaust passage 13 a may be provided with two airflow inlets 13 c facing inwardly towards a user's mouth and nose. The outer edge of the transparent mask 13 may be provided with a soft plastic cover 5 that seals the exhaust passage 13 a. The soft plastic cover 5 may be provided with an opening at the region of the user's eyes. An inner bottom side of the soft plastic cover 5 may be provided with a breathing chamber. A seal may be provided along an edge of the breathing chamber that fits over the user's mouth and nose. A periphery of the breathing chamber may be sealingly pressed against an inner wall of the transparent mask 13 by a fixing frame 6. The fixing frame 6 may be provided with an air-guiding groove 6 a that is in sealed communication with the airflow inlets 13 c. The fixing frame 6 may be further provided with an air-exit aperture 6 b that is in communication with the air-guiding groove 6 a. The air-exit aperture 6 b may be provided with an air-exit one-way valve plate 7 which may be mounted on the fixing frame 6.

In the respiratory face mask of the present application, the fixing frame 6 is provided with an air-guiding groove 6 a that is in sealed communication with the airflow inlets 13 c, an air-exit aperture 6 b that is in communication with the air-guiding groove 6 a, and the air-exit aperture 6 b is provided with an air-exit one-way valve plate 7 which is mounted on the fixing frame 6. During exhalation, exhaled gas opens up the air-exit one-way valve plate 7, passes through the air-exit aperture 6 b, enters the air-guiding groove 6 a, then passes through the airflow inlets 13 c and the exhaust passage 13 a, and finally exits the breathing tube 4 through the connecting tube 13 b. During inhalation, the air-exit one-way valve plate 7 is closed, thereby preventing breathing in exhaled waste gas during inhalation.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, the transparent mask 13 may be provided with a display screen 8 with a main board located in front of the user's forehead. A top rear portion of the breathing tube 4 may be provided with a camera 1 a having a rearward vision. The face mask or the breathing tube 4 may be provided with a temperature sensor and/or a GPS (global positioning system) positioning module. Since the transparent mask 13 is provided with the display screen 8 with a main board located in front of the user's forehead, a top rear portion of the breathing tube 4 is provided with the camera 1 a having a rearward vision, and the face mask or the breathing tube 4 is provided with a temperature sensor and/or a GPS positioning module, then by making use of the camera 1 a, the user can observe the condition at the back, including the position of the teammates and the distance of the user from the coastline. The temperature sensor and the GPS positioning module can monitor water temperature and the position of the user. Images captured by the camera 1 a and information collected by the temperature sensor and the GPS positioning module can be displayed on the display screen 8 for real time viewing by the user. In the present embodiment, the camera 1 a, the temperature sensor and the GPS positioning module can be electrically connected to the display screen 8 by wirings. In other embodiments, wireless method can be used for connection. Further e a mobile phone frame may be provided inside the transparent cover 13 in front of the user's forehead, and a sealed mobile phone can be placed on the mobile phone frame, and can be connected to the camera 1 a, temperature sensor and GPS positioning module, etc. via Bluetooth.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, the transparent mask 13 may be recessed inwardly on an outer surface thereof at a region in front of the user's eyes to form an anti-scratch portion 13 e.

Thus, when the respiratory face mask is carried around or is placed on the ground or a table, the protrusion around the periphery of the recessed anti-scratch portion 13 e can be used as a support that can prevent the portion of the transparent cover in front of the user's eyes from being scratched and causing viewing problems. The outer surface of the anti-scratch portion 13 e may be provided with a layer of blue titanium nanometer coating.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-6, and based on the above-mentioned technical scheme, an outer top portion of the face mask may be provided with an outwardly extending bearing platform 11 a. The bearing platform 11 a may be provided with a trough 11 c. Two sides of the trough 11 c may be provided with two aligned through-holes 11 b respectively. An outer wall at one of the two sides of the trough 11 c may be provided with a slot 11 d. The face mask may further include a connecting element. The connecting element may include a connecting base 14 a which can be releasably slotted into the slot 11 d, and a stepped fixing post 14 f which may be connected to one end of the connecting base 14 a. A spring 14 d and a sliding ring 14 e may be sleeved around connecting ends of the fixing post 14 f and the connecting base 14 a. The sliding ring 14 e may be sleeved onto a smaller end of the stepped fixing post 14 f and restrictedly slidable therealong, and the spring 14 d can be compressed between the sliding ring 14 e and the connecting base 14 a. The sliding ring 14 e may be larger than the through-holes 11 b. The connecting base 14 a may be provided with two symmetric radially extending protrusions 14 b. The slot 11 d may be provided with two notches 11 e through which the two protrusions 14 b can pass. When the connecting element is inserting through the two through-holes 11 b, the protrusions 14 b of the connecting base 14 a enters the slot 11 d through the notches 11 e, and rotation of the connecting base 14 a causes the protrusions 14 b to press against an inner wall of the slot 11 d under the returning force of the spring 14 d so that the connecting base 14 a is held within the slot 11 d. When the connecting base 14 a is further rotated to a position where the protrusions 14 b are aligned with the notches 11 e, the connecting base 14 a can be released from the slot 11 d under the returning force of the spring 14 d so that the fixing post 14 f can be pulled out from the one side of the slot 11 d. The sliding ring 14 e may be provided at the smaller end of the stepped fixing post 14 f. The spring 14 d can be mounted between the sliding ring 14 e and an inner bottom wall of a cylindrical bore 14 c such that a sport camera housing can be easily removed from or attached to the respiratory face mask.

In an embodiment of the respiratory face mask, as shown in FIG. 3, and based on the above-mentioned technical scheme, the soft plastic cover 5 may divide the transparent mask 13 into an inhale passage and an exhaust passage. The connecting tube 13 b may be provided with separated inner and outer openings. The inner opening may be in sealed communication with the inhale passage between the soft plastic cover 5 and the transparent mask 13. The outer opening may be in sealed communication with the exhaust passage 13 a. This two-layer structure with front and rear openings can make the inhale passage and the exhaust passage become larger according to need, and can ensure smooth breathing in and out. The two sides of the outer opening may not be provided with walls. Instead, a wall of the inner opening, a wall at the bottom of the outer opening, and the soft plastic cover 5 can form into a sealed tubular structure, thereby reducing the space occupied by the walls at the two sides of the outer opening.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, two sides of the soft plastic cover 5 may be provided with air-intake apertures 5 a that are in communication with the inhale passage. The air-intake apertures 5 a may be provided with air-intake one-way valve plates 12 mounted on the soft plastic cover 5.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, an outer side of the soft plastic cover 5 may be provided with a fixing ring 11 that seals and presses the soft plastic cover 5 against the transparent mask 13.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, a lower portion of the transparent mask 13 may be provided with water drainage holes 13 d. The water drainage holes 13 d may be provided with a water drainage one-way valve plate 9 mounted on the transparent mask 13. When water gets into the face mask, the user can blow air and expel the water through the water drainage one-way valve plate 9.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, the lower portion of the transparent mask 13 may be provided with a fixing block 10 that covers the water drainage holes 13 d. The water drainage one-way valve plate 9 can be prevented from falling off by using the fixing block 10. The fixing block 10 may be opaque. When the user breathes under the water, exhaled air forms into mist on the transparent mask 13, and affects the appearance of the mask. The opaque fixing block 10 can block the viewing of the mist attached on the transparent mask 13 from outside.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, the soft plastic cover 5 may be provided with a sleeve 5 b snugly sleeved around the connecting tube 13 b of the transparent mask 13, and the fixing ring 11 may be provided with an outer sleeve 11 g snugly sleeved around the sleeve 5 b of the soft plastic cover 5. In order to enhance the sealability of the breathing tube 4 as well as the firmness of its connection, the outer sleeve 11 g may be provided with a recessed neck 11 f around which a rubber sealing ring 14 can be mounted.

In an embodiment of the respiratory face mask, as shown in FIGS. 1-4, and based on the above-mentioned technical scheme, the outer sleeve 11 g may be provided with a projection located below the recessed neck. The breathing tube 4 may be provided with a notch. The breathing tube 4 can be held around the outer sleeve by the notch.

The above is a description that assists the understanding of the respiratory face mask of the present application. The embodying of the respiratory face mask of the present application is not limited by the above-described embodiments. Any alteration, modification, substitution, combination, and addition that do not depart from the principle of the respiratory face mask of the present application should be equivalent replacements that are encompassed within the scope of protection of the appended claims. 

What is claimed is:
 1. A respiratory face mask comprising a face mask; a breathing tube connected with the face mask; and an upper cover and a gasket mounted on an upper portion of the breathing tube to separate a passage of the breathing tube and the face mask from external environment, wherein the face mask comprises a transparent mask, an outer edge of the transparent mask being double-layered and forming an exhaust passage, an upper portion of the transparent mask being provided with a connecting tube which is in communication with the exhaust passage and is connected with the breathing tube, the exhaust passage being provided with at least one airflow inlet facing inwardly towards a user's mouth and nose, the outer edge of the transparent mask being provided with a soft plastic cover that seals the exhaust passage, an inner bottom side of the soft plastic cover being provided with a breathing chamber having a seal provided along an edge thereof that fits over the user's mouth and nose, a periphery of the breathing chamber being sealingly pressed against an inner wall of the transparent mask by a fixing frame, the fixing frame being provided with an air-guiding groove that is in sealed communication with the airflow inlet, the fixing frame being provided with an air-exit aperture that is in communication with the air-guiding groove, and the air-exit aperture being provided with an air-exit one-way valve plate which is mounted on the fixing frame.
 2. The respiratory face mask as claimed in claim 1, wherein the transparent mask is provided with a display screen with a main board located in front of the user's forehead, and the face mask or the breathing tube is provided with at least one environmental sensor.
 3. The respiratory face mask as claimed in claim 2, wherein the environmental sensor comprises a temperature sensor, a camera, a global positioning system module, or a combination thereof provided on an outer surface of the face mask or the breathing tube.
 4. The respiratory face mask as claimed in claim 1, wherein the breathing tube is connected to an upper portion of the face mask, and the transparent mask is recessed inwardly on an outer surface thereof at a region in front of the user's eyes to form an anti-scratch portion.
 5. The respiratory face mask as claimed in claim 1, wherein an outer top portion of the face mask is provided with an outwardly extending bearing platform, the bearing platform being provided with a trough, two sides of the trough being provided with two aligned through-holes respectively, and an outer wall at one of the two sides of the trough being provided with a slot, the face mask further comprising a connecting element, the connecting element comprising a connecting base which is releasably slotted into the slot, and a fixing post connected to one end of the connecting base, wherein the fixing post is inserted into the two through-holes, and is rotatable so that the connecting base is secured in the slot, and is further rotatable so that the connecting base is released from the slot to thereby allow pulling out of the fixing post from one side of the slot.
 6. The respiratory face mask as claimed in claim 5, wherein connecting ends of the fixing post and the connecting base are mounted thereon with a spring and a sliding ring, wherein the sliding ring is sleeved onto the fixing post and restrictedly slidable therealong, and the spring is compressed between the sliding ring and the connecting base, the sliding ring being larger than the through-holes, the connecting base being provided with at least one radially extending protrusion, and the slot being provided with a notch through which the protrusion passes, when the connecting element passes through the two through-holes, the protrusion of the connecting base enters the slot through the notch, and rotation of the connecting base causes the protrusion to press against an inner wall of the slot under returning force of the spring so that the connecting base is held in the slot, and further rotation of the connecting base to a position where the protrusion is aligned with the notch, the connecting base is released from the slot under the returning force of the spring so that the fixing post is allowed to be pulled out from the one side of the slot.
 7. The respiratory face mask as claimed in claim 1, wherein the soft plastic cover divides the transparent mask into an inhale passage and the exhaust passage, and the connecting tube is provided with separated inner and outer openings, the inner opening being in sealed communication with the inhale passage between the soft plastic cover and the transparent mask, and the outer opening being in sealed communication with the exhaust passage.
 8. The respiratory face mask as claimed in claim 1, wherein an outer side of the soft plastic cover is provided with a fixing ring that seals and presses the soft plastic cover against the transparent mask.
 9. The respiratory face mask as claimed in claim 1, wherein a lower portion of the transparent mask is provided with water drainage holes, and the water drainage holes are provided with a water drainage one-way valve plate mounted on the transparent mask, the lower portion of the transparent mask being provided with a fixing block that covers the water drainage holes, and the fixing block is opaque.
 10. The respiratory face mask as claimed in claim 8, wherein the soft plastic cover is provided with a sleeve snugly sleeved around the connecting tube of the transparent mask, and the fixing ring is provided with an outer sleeve snugly sleeved around the sleeve of the soft plastic cover, the outer sleeve being provided with a recessed neck around which a rubber sealing ring is mounted. 